Four libidinous singles test each other’s fidelity in this moody 2006 drama by Eric Byler (Charlotte Sometimes). A noirish opening sequence sets the tone: the title character (Daniel Cariaga), an aimless rich kid, drives drunkenly up a mountain road overlooking the San Fernando Valley and arrives at the tony house he once shared with his best friend (Erik McDowell) and the friend’s wealthy fiancee (Kimberly-Rose Wolter). Sparks fly between Tre and the troubled young houseguest who’s supplanted him (Alix Koromzay), and their affair disrupts the domestic tranquillity. By the third act a story about tangled passions has turned into a meditation on misogyny and class prejudice, but the social criticism is blunted by soppy dialogue. 86 min.